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Do all 4.0 water pumps mount the same? I read some. Info stating 2001+ water pumps has a redesigned impeller that was similar to the hesco option? 8 fin vs 5..thus better circulation? However I am unsure about using one in my jeep? The block is a 89 renix block going in a 92 cherokee. I was curious about running a 01-06 wrangler pump, IF there's an added benefit from just using a newer style pump that is? Also my stroker has a paper type gasket with silicon on for the timing cover. Should I just yank that and run a felpro blue gasket? Valve cover & oil pan has the felpro gaskets.
I do not know about the number of fins but Wrangler pumps are not the same as Cherokee pumps. The Cherokee has a different hole pattern with the bolts spread apart and it is shorter. I took an engine out of a 94 cherokee to put in a CJ and had to get a Wrangler pump. The 5 fins looks like it will pump plenty. To make more flow I would make them deeper, not add more. Flowkooler is the way to go if you are worried about flow.
I have never seen a Jeep pump with 8 fins in the stock style. Always 5. I recall something about water pumps changing.. I also recall someone said rotation direction but that isn't correct as the pulley would have to be ribbed to run no the other side of the belt. I know the WJ water pump won't work on the XJ and probably the 00+ TJ pumps too. That gasket should be okay with RTV. Isn't the Felpro just a thicker paper gasket?
The felpro I looked at showed the blue silicon type of gasket like the valve cover & oil pan? I figure those might be better? Especially for the timing cover since I'd have to pull the harmonic damper to get at it. And it's just be easier out of the jeep. So 89 block into a 92? Use the 92 or 89?
The valve cover and oil pan have a silicon gasket option, which I would recommend over cork. The timing cover does not. If you are asking about the water pump there is no difference as the pasrts listing shows 87-01 for the water pump. I also remembered the TJ water pump mounts the fan as well and it very different form the XJ.
I should do more reading yah standing here at the parts counter. Gonna get the. 89 since the blocks an 89.
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